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This article introduces the relevant knowledge of "how to open JSON RPC API". In the operation of actual cases, many people will encounter such a dilemma. Then let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Geth uses JSON data format and JSON-RPC protocol as a way for clients to interact with the network. The pub/sub of Geth 1.4 is experimental, and so is Partity 1.6.

JavaScript API

When using web3.js to interact with etherenum nodes, follow the consistent RPC protocol.

JSON-RPC Endpoint

Default JSON-RPC terminal:

Client URL

C++ http://localhost:8545

GO http://localhost:8545

Py http://localhost:4000

Parity http://localhost:8545

Go

You can open HTTP JSON-RPC by using the-- rpc flag

Geth-rpc

You can modify the default port (8545) and address (localhost) in the following ways:

Geth-rpc-rpcaddr-rpcport

If you access RPC through a browser, you need to pay attention to cross-domain issues in the following ways:

Geth-rpc-rpccorsdomain "http://localhost:3000"

JSON-RPC can also be enabled through geth console, as follows:

Admin.startRPC (addr, port)

C++

First run the aleth startup node:

Build/aleth/aleth

Then open the JSON-RPC proxy (default ~ / .ethereum/geth.ipc and http://127.0.0.1:8545)

Scripts/jsonrpcproxy.py

If you use a non-default IPC path or JSON-RPC, you can specify:

Scripts/jsonrpcproxy.py

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